This was especially horrifying to me because I am the youngest of 4 children (my parents were doing the world a disservice by having me and my brother!) and I always dreamed of having a large family myself.
It can be difficult to reconcile these seemingly incontrovertible facts about the world being overpopulated with what the Bible says about population control. The Bible essentially says that we are to be fruitful and multiply.
And God blessed them, and God said unto them, Be fruitful, and multiply, and replenish the earth, and subdue it: and have dominion over the fish of the sea, and over the fowl of the air, and over every living thing that moveth upon the earth. Genesis 1:26 KJV
We see in multiple places in the Bible that God calls children a blessing, that having many of them is a good thing:
Lo, children are an heritage of the LORD: and the fruit of the womb is his reward. As arrows are in the hand of a mighty man; so are children of the youth. Happy is the man that hath his quiver full of them: they shall not be ashamed, but they shall speak with the enemies in the gate. Psalm 127:3-5
Some may say that the choice to have sex or not belongs to us, so we can control the amount of children we have without displeasing God by "preventing them". 1 Corinthians 7:5 talks about only refraining from sex in your marriage for agreed upon periods of time for the purpose of prayer (not the purpose of preventing children), and then you must come back together in order to keep the temptation of adultery at bay.
I touch lightly on the topic of birth control, as this is truly a subject that is causes division even within the Christian community. The subject is touched upon in Genesis 38:9-10, but there is some discord as to what God was angry about, Onan's disobedience or his "pull-out" birth control. However, I think it is fair to say that the Bible makes it clear that God loves children, and sees them as a blessing in a marriage. The Bible also encourages married couple to not withhold sex from each other. I think it is quite clear that if we as Christians were to love children as God does, we would wholeheartedly accept all of them that God blesses us with. To God, a baby is never an "oops".
Our modern society has turned children into a burden. How many articles do you see out there about how expensive it is to raise a child these days? Just yesterday I was at the gym and saw 2 pregnant women talking. One of them said to the other "this is my second baby, is that your first?" and the other woman said "no, this is my fourth", to which the first woman said "wow, that is way more than I could handle". It makes me so sad that we live in a society that makes it seem like a 1st child is a blessing, but a 4th child is a burden, and a contribution to the over-population of this world.
I have so many examples of these types of attitudes which I have seen in friends and family, but the point I am trying to make is that children are a blessing no matter what. ALL humans are created by God and made in his image. If the fruits of marriage give you many children, the Bible calls you blessed and happy (Psalm 127)! So apparently happiness according to the Bible isn't necessarily having free time to get away from your kids, but having many children. Of course, many marriages will not result in many children. My husband and I have given this area to the Lord and have found that we may never have a child biologically.
So where does my 6th grade science class fit into this? People who do not believe the Bible are probably reading this post thinking I am crazy. They look at the ideas listed above as just another reason this world is going downhill, as a reason for all the poverty, hunger, and strife in the world.
What they don't understand is that people who believe the Bible whole-heartedly believe that there is God who is in control, who knows what he is doing, and who asks that his people be fruitful and multiply. Our God is a God who provides, and he will continue to provide. If I didn't wholeheartedly believe in this God, and if I hadn't seen the proof of him in my life, I would be terrified of over-population too! Sadly, people who believe this over-population issue have no flexibility. They wholeheartedly believe that people who believe as I do are the problem, and they will never stop believing that as long as they don't believe there is a God who is in control. Unfortunately, that puts us as a stand-still. I will not change my beliefs, and neither will they. However, I encourage all of you who do believe in the Lord, who do see his work in your life, and who do know his gift of the Bible to be true, to stand up for what God says is right and be fruitful, multiply, and be joyful while doing it. (And if you can protect your children from 6th grade science class nonsense while you are at it, I suggest you do).